# SCREEN_IS_ALTERNATE

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L1464
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-define-tmux-h-screen_is_alternate/

```c
#define SCREEN_IS_ALTERNATE(s) ((s)->saved_grid != NULL)
```

## Referenced by

- [`input_csi_dispatch`](/en/tmux/3.7c/reference/c-function-input-c-input_csi_dispatch/) (function)
- [`screen_alternate_off`](/en/tmux/3.7c/reference/c-function-screen_alternate_off/) (function)
- [`screen_alternate_on`](/en/tmux/3.7c/reference/c-function-screen_alternate_on/) (function)
- [`screen_free`](/en/tmux/3.7c/reference/c-function-screen_free/) (function)
- [`screen_reinit`](/en/tmux/3.7c/reference/c-function-screen_reinit/) (function)
- [`window_pane_show_scrollbar`](/en/tmux/3.7c/reference/c-function-window_pane_show_scrollbar/) (function)